Improvement in machines for grooving blocks for wood pavements



ttti 1 ditta. f

'PERLIIY n. cUMMINes',

or PORTLAND, MAINE.

Letters Patent' No. 110,440, dated December 27,1870.

IMPRuEMENT INMAcHlNi-:s Fon cRoovlNGBLocKs Fon woon PAvEMENTs.

The Schedule referred to ln'these Letters Patent and making part of the same.

To all whom 'it 'may concern Be it known that I, PERLEY D. OUMMINGs, of the city of Portland, in the county of Cumberland and State of Maine, have invented a new and useful Machine for Cutting Key-ays in Blocks for .'Vooden Pavements; and I here declare the fol1ow. .ing to be a full, clear, and exact description thereof',

reference being h 'ad to the accompanying drawing, in which- Figure l is a side elevation;

Figure 2, a top plan; ,and`

Figure, 3, au end view.

Same letters refer to like parts.

The main shaft 'A extends entirely across the machine, and is provided with ve band-wheels, B, C, D, E. and F, their-position being shown in fig. 2.

Near the other extremity of the machine is the shaft G, extending from the side to the center of the machine, the outer end being lower than the inner.

The shaft has a band-wheel, H, and at its inner extremity the scorer I, which has an inclined position, on account ofthe inclined position of the shaft lhcwheel H is banded to the wheel G.

Onthe other side of the machine is the shaft K, with band-wheel L and screw M, of like construction and position with the shaft G, the wheel I1 being banded to the wheel E.

Beyond the shaft K is the shaft N, which is horizontal, and is likewise provided with band-wheel, and with an upright cutter, O and l, respectively, Q and D being connected by a band.

At the same end of the machine, and extending part of way'across the same is the shaft Q, have ing band-wheel lt and beveled gear S.

The gear S matches into the beveled gear 'l on the vertical shaft V, which has the gear W, and terminates in the feeder Af.

At the left of the shaft V, and in a similar position, is another vertical shaft, provided with a gearwheel, B', matching into the gear W, and terminating, like the shaft V, in the toothed feeder C'.

The distance of the feeders A and- C'A is regulated by the spring D', fig. 2.

The shalt Q is rotated by baud from wheel It to wheel E. Y

Under the feeders A'and C is the platform E', having the guides F and G.

Beyond the platform E', and over the screws and cutters I M P, is 'the movable platform H', wit-h slots therein, to allow an arc of the cutters to protrude through the same.

The left side Kof' the vplatform is provided wit-h a guide, while above and to thea-right of' the cutters,

are independent rollers 1' I', which are renderedadjustable by springs placed above or to the right of the pivot of' same, according as the rolleris above or at the side of the platform'l (See A".') The platformv the machine.

In operating the machine, power is applied to the are placed von the platform or table E', the surface in which the key-way is to be cut being downward.

They are then pushed between the feeders A and C', by which they are carried upon the platform H', each block, while passing through the feeders, forcing onall those before it.V

The blocks are thus forced by the feeders over the scorers I M and the cutter P, the rollers I' I' adjusting themselves to any inequalities in the blocks.

- made in the surface of the block, leavingbetweeu them a dovetailed piece of wood, which is removed by the cutter'I,

The blocks are then carried upon the platform K' K', whence they may be conveniently removed.

I do not claim the arrangement ofthe saws set out in Joscph Dills dovetailing-machine, August 30, 1.870, N o. 106,922.

' The feeding-rolls of 'l. D. Knights patent, No.

device set out in my application.

and their the independent spring-rolls, and the planer eration and purpose from my inclinedknives and chipping-wheel.

I do not claim the, combination of a saw with a finishing-grinder; neither do I claim-the combination of a movable bed with a horizontal shaft, hav 'ing a cutter for tonguing and grooving tapering boards, as seen in B. J. Barberis patent No. 14,220, rnebruary 12, 185e. t

In the patent of H. C. Ingraham, No. 23,250, March 15, 1859, the rollers are differently arranged from mine, subserve a different purpose, and the machine has no equivalent for either the feeders. or cut-ting-box. I do not claim such a device.

My machine is for cutting an inwardly-and-upwardly-flaring groove in several successive separate wooden blocks, and has no connection with planing or grooving boards or long pieces oftimber.

It is evident that by widening the two scorers I and M- the whole of' the wood between the outer edges of the incisions may be removed, thus avoiding the necessity of the upright cutter'P. y

What I claim as my invention, and desire to secure by Letters Patent oftheUuit'ed States, is

The combination of the scorers I M, cutter P with the feeding device A' C and the cutting-box, with its series ot' independent self-adjusting rollers. i

PERLEY D.l CUMMINGS.

Witnesses:

Wist HENRY CLIFFORD,

'GEORGE BIRD.

F is then continued over the shaft A to the end ot band-wheel 15. The blocks cut to the proper size By the first two cutters orv scorers two incisions are` 16,7 7 7, March 3, 1857, are different from the feeding My.. invent-ion shows, first, the vertical feed-rolls,

and grinding-cylinderof Knightare different in op- 

